Single-molecule probes in organic field-effect transistors

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Single-molecule probes in organic field-effect transistors

Type: Doctoral Thesis
Title: Single-molecule probes in organic field-effect transistors
Author: Nicolet, Aurélien Armel Louis
Publisher: LION/MoNOS, Faculty of Science, Leiden University
Issue Date: 2007-10-04
Keywords: Anthracene crystal
Charge transport
Dibenzoterrylene
Field-Effect Transistors
Guest-host system
Insertion
Molecular crystal
Single-Molecule Spectroscopy
Terrylene
Abstract: The goal of this thesis is to study charge transport phenomena in organic materials. This is done optically by means of single-molecule spectroscopy in a field-effect transistor based on a molecular crystal. We present (in Chapter 2) a fundamental requirement for single-molecule spectroscopy concerning the energy levels of the guest molecule with respect to the ones of the host molecule. Following this constraint, we study (in Chapters 3 and 4) the photophysics of a new system for high-resolution spectroscopy at cryogenic temperatures, which consists of dibenzoterrylene molecules inserted in a crystal of anthracene. We then characterise (in Chapter 5) the electrical properties of the anthracene field-effect transistor with 'conventional' methods. In Chapter 6, we finally use the influence of an electric field on the spectroscopic properties of fluorescent molecules to investigate locally the charge carrier transport phenomena in a crystal of anthracene. The goal of this thesis is to study charge transport phenomena in organic materials. This is done optically by means of single-molecule spectroscopy in a field-effect transistor based on a molecular crystal. We present (in Chapter 2) a fundamental requirement for single-molecule spectroscopy concerning the energy levels of the guest molecule with respect to the ones of the host molecule. Following this constraint, we study (in Chapters 3 and 4) the photophysics of a new system for high-resolution spectroscopy at cryogenic temperatures, which consists of dibenzoterrylene molecules inserted in a crystal of anthracene. We then characterise (in Chapter 5) the electrical properties of the anthracene field-effect transistor with 'conventional' methods. In Chapter 6, we finally use the influence of an electric field on the spectroscopic properties of fluorescent molecules to investigate locally the charge carrier transport phenomena in a crystal of anthracene. The goal of this thesis is to study charge transport phenomena in organic materials. This is done optically by means of single-molecule spectroscopy in a field-effect transistor based on a molecular crystal. We present (in Chapter 2) a fundamental requirement for single-molecule spectroscopy concerning the energy levels of the guest molecule with respect to the ones of the host molecule. Following this constraint, we study (in Chapters 3 and 4) the photophysics of a new system for high-resolution spectroscopy at cryogenic temperatures, which consists of dibenzoterrylene molecules inserted in a crystal of anthracene. We then characterise (in Chapter 5) the electrical properties of the anthracene field-effect transistor with 'conventional' methods. In Chapter 6, we finally use the influence of an electric field on the spectroscopic properties of fluorescent molecules to investigate locally the charge carrier transport phenomena in a crystal of anthracene.
Description: Promotor: M.A.G.J. Orrit
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Nicolet, A.A.L., 2007, Doctoral thesis, Leiden University
Series/Report no.: Casimir PhD series, Delft-Leiden ; 2007-12
ISBN: 9789085930358
Handle: http://hdl.handle.net/1887/12366
 

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